If you want just a quick/temporary skill increase since this is from a small command, you can edit the contents of the "playerLevel" array in the Player class.
For an example, if you were to add this statement in your god command:
It will set the player's strength level to 99.Code:c.playerLevel[2] = 99; c.getPA().refreshSkill(2);
Instead of just spoiling the fun and letting me write the command for you, you should try and play around with this yourself.
This list of skill ids might help you.
Spoiler for Skill ID List: